
Flights from Boston to Union
Photo by Zachary Williams
Cheapest flights from Boston
These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago

Wed, Sep 17 - Wed, Sep 24
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago

Tue, Sep 23 - Sat, Sep 27
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$207 Roundtrip, found 3 hours ago
$207
Roundtrip
found 3 hours ago

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$207 Roundtrip, found 2 days ago
$207
Roundtrip
found 2 days ago

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$210 Roundtrip, found 2 days ago
$210
Roundtrip
found 2 days ago

Tue, Sep 23 - Sat, Sep 27
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$211 Roundtrip, found 3 hours ago
$211
Roundtrip
found 3 hours ago

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$215 Roundtrip, found 2 days ago
$215
Roundtrip
found 2 days ago

Tue, Aug 19 - Sat, Sep 6
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago

Tue, Sep 16 - Tue, Sep 23
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$217 Roundtrip, found 2 days ago
$217
Roundtrip
found 2 days ago

Tue, Sep 23 - Sat, Sep 27
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$217 Roundtrip, found 3 hours ago
$217
Roundtrip
found 3 hours ago

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago

Sat, Sep 20 - Sat, Sep 27
PVD
T.F. Green
SEA
Seattle - Tacoma Intl.
$226 Roundtrip, found 2 days ago
$226
Roundtrip
found 2 days ago

Thu, Sep 18 - Tue, Sep 23
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago

Tue, Aug 19 - Wed, Sep 3
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$232 Roundtrip, found 10 hours ago
$232
Roundtrip
found 10 hours ago

Tue, Sep 23 - Sat, Sep 27
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$237 Roundtrip, found 3 hours ago
$237
Roundtrip
found 3 hours ago

Thu, Sep 18 - Mon, Sep 29
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago

Tue, Sep 16 - Sun, Sep 28
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago

Tue, Aug 19 - Wed, Sep 3
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$242 Roundtrip, found 10 hours ago
$242
Roundtrip
found 10 hours ago

Tue, Aug 19 - Sat, Sep 6
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$242 Roundtrip, found 2 days ago
$242
Roundtrip
found 2 days ago
Wed, Jul 16 - Mon, Jul 21
BOS
Logan Intl.
SEA
Seattle - Tacoma Intl.
$643 Roundtrip, found 3 days ago
$643
Roundtrip
found 3 days ago